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沒有足夠的Geolocation權限Android Webview

[英]Does not have sufficient Geolocation Permissions Android Webview

晚上好。 我正在使用Webview在Android上制作跟蹤應用程序。 我遇到了問題,因為系統在該位置旁邊都運行良好。 我嘗試過Grishma Ukani先生的一些方法(非常感謝)。

package com.example.webview;

import android.app.Activity;
import android.os.Bundle;
import android.webkit.GeolocationPermissions;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;

/**
* A minimal WebView app with HTML5 geolocation capability
*
* @author David M. Chandler
*/
public class GeoWebViewActivity extends Activity {

/**
 * WebViewClient subclass loads all hyperlinks in the existing WebView
 */
public class GeoWebViewClient extends WebViewClient {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        // When user clicks a hyperlink, load in the existing WebView
        view.loadUrl(url);
        return true;
    }
}

/**
 * WebChromeClient subclass handles UI-related calls
 * Note: think chrome as in decoration, not the Chrome browser
 */
public class GeoWebChromeClient extends WebChromeClient {
    @Override
    public void onGeolocationPermissionsShowPrompt(String origin,
            GeolocationPermissions.Callback callback) {
        // Always grant permission since the app itself requires location
        // permission and the user has therefore already granted it
        callback.invoke(origin, true, false);
    }
}

WebView mWebView;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    mWebView = (WebView) findViewById(R.id.webView1);
    // Brower niceties -- pinch / zoom, follow links in place
    mWebView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
    mWebView.getSettings().setBuiltInZoomControls(true);
    mWebView.setWebViewClient(new GeoWebViewClient());
    // Below required for geolocation
    mWebView.getSettings().setJavaScriptEnabled(true);
    mWebView.getSettings().setGeolocationEnabled(true);
    mWebView.setWebChromeClient(new GeoWebChromeClient());
    // Load google.com
    mWebView.loadUrl("http://www.google.com");
}

@Override
public void onBackPressed() {
    // Pop the browser back stack or exit the activity
    if (mWebView.canGoBack()) {
        mWebView.goBack();
    }
    else {
        super.onBackPressed();
    }
}
}

一切順利,沒有錯誤。 但仍然無法獲得設備位置/權限然后此信息出現在android studio上

E / cr_LocationProvider:在從系統注冊位置更新時捕獲安全性異常。 該應用程序沒有足夠的地理定位權限。 E / cr_LocationProvider:newErrorAvailable應用程序沒有足夠的地理定位權限。

然后我試圖修改與地理位置權限不足的鏈接,並將此修改放在我的公共類GeoWebViewActivity extends Activity

private static final int REQUEST_FINE_LOCATION = 1;
private String mGeolocationOrigin;
private GeolocationPermissions.Callback mGeolocationCallback;

public class GeoWebChromeClient extends WebChromeClient {
    @Override
    public void onGeolocationPermissionsShowPrompt(String origin,
                                                   GeolocationPermissions.Callback callback) {
        // Geolocation permissions coming from this app's Manifest will only be valid for devices with
        // API_VERSION < 23. On API 23 and above, we must check for permissions, and possibly
        // ask for them.
        String perm = Manifest.permission.ACCESS_FINE_LOCATION;
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M ||
                ContextCompat.checkSelfPermission(GeoWebViewActivity.this, perm) == PackageManager.PERMISSION_GRANTED) {
            // we're on SDK < 23 OR user has already granted permission
            callback.invoke(origin, true, false);
        } else {
            if (!ActivityCompat.shouldShowRequestPermissionRationale(GeoWebViewActivity.this, perm)) {
                // ask the user for permission
                ActivityCompat.requestPermissions(GeoWebViewActivity.this, new String[] {perm}, REQUEST_FINE_LOCATION);

                // we will use these when user responds
                mGeolocationOrigin = origin;
                mGeolocationCallback = callback;
            }
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        switch (requestCode) {
            case REQUEST_FINE_LOCATION:
                boolean allow = false;
                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    // user has allowed this permission
                    allow = true;
                }
                if (mGeolocationCallback != null) {
                    // call back to web chrome client
                    mGeolocationCallback.invoke(mGeolocationOrigin, allow, false);
                }
                break;
        }
    }
}

但有一些錯誤:

  1. 錯誤:(67,66)錯誤:找不到符號類NonNull
  2. 錯誤:(50,22)錯誤:包Build不存在
  3. 錯誤:(66,9)錯誤:方法不會覆蓋或實現超類型的方法
  4. 錯誤:(68,18)錯誤:找不到符號方法onRequestPermissionsResult(int,String [],int [])。

任何對另一種方法的幫助和建議都將非常感激。

您需要導入NonNull注釋。

添加import javax.annotation.Nonnull; 對於您的導入,您可以在課程頂部找到它們。
你的類可能在一個包中,你需要在GeoWebChromeClient類中聲明該包。 請注意,您有一個行package com.example.webview; GeoWebViewActivity類的頂部,指示此類位於../com/example/webview 如果GeoWebChromeClient不再是內部類,則需要類似的包行。

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